Paydirt
Insider filing · NAMS

Louise Frederika Kooij sold $453K of NewAmsterdam Pharma (NAMS)

Executed Sep 3 2025, disclosed Sep 5 2025, 2 days later.

Value, as filed
$453K
18,073 sh × $25.09
Executed
Sep 3 2025
the trade date, as filed
Disclosed
Sep 5 2025
2 days after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
–
purchases only

Returns are measured on stock purchases only.

The filer
LK Louise Frederika Kooij Chief Accounting Officer profile →

Louise Frederika Kooij (Chief Accounting Officer) filed 6 Form 4 reports in the trailing twelve months (0 purchases, 6 sales, 1 filed past the two-business-day deadline), most often in NewAmsterdam Pharma Company N.V. (NAMS). The largest single filing was $5.2M of NAMS (145,000 sh across 3 lots, as filed), executed Dec 23 2025.

The name
NAMS NewAmsterdam Pharma Company N.V. NAMS · Healthcare · 45 filings in 24 months ticker →

Healthcare · NewAmsterdam Pharma Company N.V., a late-stage biopharmaceutical company, develops therapies to enhance patient care in populations with ca…

More Healthcare filings→ Insider filings, newest first→ View the original filing at www.sec.gov→
Other filings by Louise Frederika Kooij in NAMS
NAMSSALE NewAmsterdam Pharma Company N.V. $3.1M
102,085 sh across 2 lots
Exec Jul 20
Filed Jul 22 · 4:05 PM ET NAMSSALE NewAmsterdam Pharma Company N.V. $1.2M
39,700 sh × $30.20
Exec Jun 22
Filed Jun 24 · 5:30 PM ET NAMSSALE NewAmsterdam Pharma Company N.V. $2.3M
65,000 sh × $35.69
Exec May 26
Filed May 27 · 5:30 PM ET NAMSSALE NewAmsterdam Pharma Company N.V. $2.3M
72,428 sh across 2 lots
Exec Jan 27
Filed Jan 29 · 5:30 PM ET NAMSSALE NewAmsterdam Pharma Company N.V. $2.4M
72,263 sh across 3 lots
Exec Jan 23
Filed Jan 27 · 5:30 PM ET NAMSSALE NewAmsterdam Pharma Company N.V. $5.2M
145,000 sh across 3 lots
Exec Dec 23 2025
Filed Dec 29 2025 · 5:30 PM ET † NAMSSALE NewAmsterdam Pharma Company N.V. $3.9M
150,000 sh across 2 lots
Exec Sep 9 2025
Filed Sep 10 2025 · 5:30 PM ET NAMSSALE NewAmsterdam Pharma Company N.V. $206K
8,269 sh × $24.86
Exec Aug 25 2025
Filed Aug 27 2025 · 5:30 PM ET